dialect

Dialect comes from Greek dialektos, recorded by the 4th century BCE and built from dialegesthai, 'to converse' or 'to discourse.' The earliest sense was not a lesser language but a manner of speech in use among people. Greek writers could use dialektos for discussion, language, or regional speech. Speech was first something exchanged between speakers.

In the Hellenistic and Roman worlds, grammarians began naming Greek dialects such as Ionic, Doric, Aeolic, and Attic. That technical use narrowed the word toward a variety of language associated with place and literature. Latin adopted it as dialectus. Learned Europe inherited the term through scholarship rather than ordinary speech.

French had dialecte, and English borrowed dialect in the late 16th century. Early modern writers used it for regional or social varieties of a language, often with classical categories in mind. Over time, the word picked up social judgments that were never built into the Greek source. Its history is more neutral than many modern attitudes around it.

Today dialect names a distinct form of a language associated with a region, class, or community. Linguistics treats dialect as a normal fact of language variation, not a broken version of a standard tongue. That returns the word to something near its beginning in lived speech. A dialect is how a group actually talks.